From d8dfabfd0422de3b2af240ce2c4631af51fe1dd0 Mon Sep 17 00:00:00 2001
From: Bob Gilligan <gilligan@vyatta.com>
Date: Wed, 22 Dec 2010 02:33:29 -0800
Subject: Add more error recovery and disk space checking.

---
 scripts/install/install-image          |  2 ++
 scripts/install/install-image-existing | 42 +++++++++++++++++++++++++++++++---
 2 files changed, 41 insertions(+), 3 deletions(-)

(limited to 'scripts/install')

diff --git a/scripts/install/install-image b/scripts/install/install-image
index c201be3c..fd4fee7d 100755
--- a/scripts/install/install-image
+++ b/scripts/install/install-image
@@ -60,6 +60,7 @@ fetch_iso_by_url ()
     curl -f -o $filename $NEW_ISO
     if [ $? -ne 0 ]; then
 	echo "Unable to fetch ISO from $NEW_ISO"
+	rm -f $filename
 	exit 1
     fi
 
@@ -78,6 +79,7 @@ fetch_iso_by_url ()
 
 	response=$(get_response "Yes" "Yes No Y N")
 	if [ "$response" == "no" ] || [ "$response" == "n" ]; then
+	    rm -f $filename
 	    fail_exit 'OK.  Installation will not be performed.'
 	fi
 
diff --git a/scripts/install/install-image-existing b/scripts/install/install-image-existing
index de58233e..39299507 100755
--- a/scripts/install/install-image-existing
+++ b/scripts/install/install-image-existing
@@ -109,6 +109,19 @@ if [ -d $BOOT_DIR/$NEWNAME ]; then
     fi
 fi
 
+#
+# Check to make sure we have enough space to install image...
+#
+space_avail=`df -k / | tail -1 | awk '{ print $4 }'`
+space_needed=`du -s ${CD_ROOT}/live | awk  '{ print $1 }'`
+
+if [ $space_avail -le $space_needed ]; then
+    echo "We do not have enough disk space to install this image!"
+    echo "We need $space_needed KB, but we only have $space_avail KB."
+    echo "Exiting..."
+    exit 1
+fi
+
 # start the install
 echo "Installing \"$NEWNAME\" image."
 
@@ -134,6 +147,7 @@ cp --no-dereference --preserve=all $boot_files $REL_ROOT/ >&/dev/null
 
 # mount copied squashfs
 if ! try_mount "-o loop,ro $target_squash $READ_ROOT"; then
+  rm -rf $REL_ROOT
   failure_exit 'Failed to mount new squashfs image.'
 fi
 
@@ -141,6 +155,7 @@ fi
 margs="-t unionfs -o noatime,dirs=$RW_DIR=rw:$READ_ROOT=ro unionfs"
 margs="$margs $INST_ROOT"
 if ! try_mount "$margs"; then
+  rm -rf $REL_ROOT
   failure_exit 'Failed to set up root directory for postinst.'
 fi
 
@@ -152,13 +167,24 @@ if ! grep -q 'tmpfs /var/run ' $PI_FSTAB >&/dev/null; then
   echo 'tmpfs /var/run tmpfs nosuid,nodev 0 0' >$PI_FSTAB
 fi
 
+#
+# Check to make sure we have enough space to copy the config and data dirs...
+#
+space_avail=`df -k / | tail -1 | awk '{ print $4 }'`
+if [ -e $${VYATTA_CFG_DIR}/data ]; then
+    space_needed_data=`du -s ${VYATTA_CFG_DIR}/data | awk  '{ print $1 }'`
+else
+    space_needed_data=0
+fi
+space_needed_configdata=`du -s ${VYATTA_CFG_DIR} | awk  '{ print $1 }'`
+space_needed_config=$(($space_needed_configdata - $space_needed_data))
+
 # save current config dir if needed
-if [ -f "$VYATTA_CFG_DIR/config.boot" ]; then
+if [ $space_avail -gt $space_needed_configdata ]; then
   resp=''
   while [ -z "$resp" ]; do
     echo 'Would you like to save the current configuration '
-    echo 'directory and use the current start-up configuration '
-    echo -n 'for the new version? (Yes/No) [Yes]: '
+    echo -n 'directory and config file? (Yes/No) [Yes]: '
     resp=$(get_response "Yes" "Yes No Y N")
     if [ "$resp" == 'yes' ] || [ "$resp" == 'y' ]; then
       echo 'Copying current configuration...'
@@ -170,6 +196,16 @@ if [ -f "$VYATTA_CFG_DIR/config.boot" ]; then
       chmod -R 775 $ndir
     fi
   done
+else
+    echo 'There is not enough space to save the current configuration directory.'
+    echo -n 'Would you like to continue without saving it? (Yes/No) [Yes]: '
+    resp=$(get_response "Yes" "Yes No Y N")
+    if [ "$resp" == 'yes' ] || [ "$resp" == 'y' ]; then
+	echo "OK. Proceeding without saving current config directory."
+    else
+	rm -rf $REL_ROOT
+	failure_exit "OK.  Exiting."
+    fi
 fi
 
 if [ -d /etc/ssh ]; then
-- 
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